Carl Viggo Manthey Lange (9 April 1904 – 31 May 1999) was a Norwegian physician and politician for the Labour Party. He was born in Kristiania as a son of Christian Lous Lange (1869–1938) and Bertha Manthey (1867–1947), and brother of August and Halvard Manthey Lange. He enrolled as a student in 1922, and graduated with the cand.med. degree in 1929. While studying he was a member of Mot Dag, where he organized study circles for both members and non-members, and contributed to the periodical Populært Tidsskrift for Seksuell Oplysning. He was the chairman of the Norwegian Students' Society in 1933, and of the Student Society in Trondheim in 1939.